Sylvester w



pUNITED STATES PATENT OFFICE.

SYLVESTER W. WARREN, OF BROOKLYN, NEIV YORK, ASSIGNOR TO HIMSELF, ANDDEXTER N. FORCE, OF NEW YORK, N. Y.

STEAM-WHISTLE.

Specification of Letters Patent No. 17,656, dated June 23, 1857.

To all whom it may concern:

Be it known that I, SYLvEsTER W. WAR- REN, of the city of Brooklyn, (E.D.,) in the county of Kings, and State of New York, have invented, made,and applied to use a new and useful Improvement in Whistles forSteam-Engines, Locomotives, &c.; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawing,making part of this specification, wherein- Figure 1 is a plan of thewhistle, and Fig. 2 is a vertical section of the same.

Similar marks of reference denote corresponding parts.

In the operation of steam whistles on locomotives, steamboats andmanufactories considerable difficulty arises from the ordinary whistlebeing only adapted to sound well at one pressure of the steam i. e. thedistance between the steam orifice or mouth and the inverted cup has tobe adjusted to the usual pressure of the steam; hence if the steam be ofa greater or less pressure an indistinct sound is made; and the water ofcondensation also interferes materially with the efficiency of suchwhistles, rendering them useless when most needed, and this isparticularly the case on steamboats.

The nature of my said invention consists in asimple attachment to thesteam pipe in which no water of condensation can lodge, and theapparatus is adapted to instantaneous use under varying pressures byplacing different whistling mouths at distances from the steam escape,adapted to given pressures so that one or more of the whistling mouthswill be in operation.

In the drawing a, is a pipe from any engine boiler or other source ofsteam under pressure, and into which pipe steam is to be admittedwhenever desired to produce a signal or whistle by any suitable valve orcock. b, is a cap screwed on the end of said pi e having two or morediagonal or radial oles c, passing from the escape mouths 1, into thesteam pipe. These mouths 1, are formed between the cap Z), and thehollow metallic whistle d, that fits over the cap b, as shown and isattached thereto by a set screw or other suitable device. i

e. e, are the whistling mouths, placed at different distances from thetop of the cap b. The first of these is immediately above said cap so asto let off any water of condensation, and act with a comparatively smallpressure of steam, and the next mouth c. is sufficiently above said capb, to act with a higher pressure, and before the first mouth e, ceasesto act, and so on, any number of mouths (c) may be used at differentheights according to the size of apparatus and the variations ofpressure to which the Whistle is ever exposed.

What I claim and desire to secure by Letters Patent, is-

1. The cap d and whistling mouth or mouths e, connected to the steampipe substantially as specified.

2. I also claim placing two or more Whistling mouths or edges in thewhistle at different distances from the orifices for the escape ofsteam, so as to adapt one whistle to different pressures withoutchanging the position of any of the parts, substantially as specified.

In witness whereof I have hereunto set my signature this thirtieth dayof April, 1857.

S. W. WARREN.

Witnesses:

LEMUEL W. SERRELL, THOMAS G. HAROLD.

